Umby
Smash Master
On it.
PS: Someone critique Wolfy's videos for him, he asked and no one has yet to respond.
Match 1: You're going to have to learn to maneuver around the field on fit a bit better vs Wario. If Wario's waiting for you to Spin Dash/Charge, don't take the bait. Cancel it or jump out of it. If you're trying to bait and punish an attack, don't wait for it and roll behind him. You're going to get read and punished sooner or later. Especially don't roll towards him with your back turned. Some of your forward aerial attack strings were nice, but you should learn to limit yourself to using it only when it can be auto canceled. Dropping through low platforms with it isn't really a good idea.
Match 2: Starting off, same problems as in the first video. Don't shield grab if the opponent is clearly out of range. If you can't see that, start using other options out of shield to train yourself.
Really the main peev is how immobile you are. It seems you are using dodge rolling and Spin Dash to get around the stage. Use Sonic's natural ground speed to your advantage more.